请帮助了解属性（java）。如何在其他方法中使用getproperty？这里我想在@test（test method）中也使用它。
它的可见性受到创建它的方法的限制。我需要创建一个更高的对象吗？
我将非常感谢你的帮助。谢谢！
代码：

public class Main {

    public WebDriver driver = null;

    @BeforeTest
    public void login() throws IOException {

        //Connect properties file for data driven tests.
        Properties properties = new Properties();
        FileInputStream file = new FileInputStream("//Users//macbook//IdeaProjects//WebElements//src//dataDriven.properties");
        properties.load(file);

        //Option to choose browser from our properties file.
        if (properties.getProperty("browser").equals("Chrome")) {
            System.setProperty("webdriver.chrome.driver", "/Users/macbook/Downloads/Selenium files/chromedriver");
            driver = new ChromeDriver();
        } else if (properties.getProperty("browser").equals("Firefox")) {
            System.setProperty("webdriver.gecko.driver", "/Users/macbook/Documents/Selenium/Browser Drivers/Firefox GecoDeriver/geckodriver");
            driver = new FirefoxDriver();
        }

        //Option to chose url from our properties file.
        driver.get(properties.getProperty("url"));
    }

    @Test
    public void test() {        
        driver.findElement(By.id("username")).clear();
        driver.findElement(By.id("username")).sendKeys(properties.getProperty("Username"));

        driver.findElement(By.id("password")).clear();
        driver.findElement(By.id("password")).sendKeys(properties.getProperty("Password"));

        driver.findElement(By.xpath("//*[@name = 'event_login']")).click();
    }

    @AfterTest
    public void end() {
        driver.quit();
    }
}